The World Association for the Development of Philately (WADP) and the Universal Postal Union (UPU) jointly conceived and developed the WADP Numbering System - WNS, which was launched on 1 January 2002.

PL009.02

Country / Post Poland
Date of Issue 8 March 2002
Primary theme Fauna (Birds - General)
Subject Chicks
Width 31.3 mm
Height 51.0 mm
Denomination 2.00 PLN
Number in set 2 (show set)
Layout/Format sheet of 20
Perforations 11.6 by 11.8
Stamp issuing authority Polish Post
Printer
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